Suspension-railway



J. H. SMITH.

SUSPENSION RAILWAY.

APPLICATRON FILED NOV. 29. I919.

Patented Feb. 8; 1921.

4 sums-sage 1.

qbm 5 tEsda/z, Z 5m it];

J. H. SMITH.

SUSPENSION RAILWAY.

APPLICATION FILED NOV. 29, 1919.

1,367,788. 4 Patented Feb. 8,1921.

4 SHEETS-SHEET 2.

umtoz 'rf05 z'ak 3211 5/0,

J. H. SMHH.

SUSPENSION RAILWAY.

APPLICATION FlLED NOV. 29, 1919. 7 3,367,788. Patented Feb, 8, 1921.

4 SHEETS-SHEE1 3'.

J. H. SMITH.

SUSPENSION RAILWAY.

APPLICATION FILED NOV. 29, I919.

1,367,788. PatentedFeb. 8, 1921.

4 SHEETS-SHEET 4- SEA'EES @FFICE.

JOSIAH H. SMITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WILLIAM H. TIGERMAN, 0F PHILADELPHIA, PENNSYLVANIA.

SUSPENSION-RAILWAY.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed November 29, 1919. Serial No. 341,464.

T 0 e25 whom 2'25 may concern:

Be it known that I, JOSIAH H. SMITH, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements 1n Suspension-Railways, of which the following is a specification.

My invention relates to improvements in suspension railways, the object of the invention being to provide an improved double rail suspension construction designed for use in subways.

A further object is to provide a suspension railway in which oppositely proje= ting cantalivers are carried by longitudinal girders supported from the transverse I-beams of the subway roof structure, said cantalivers supporting parallel rails on which the wheels of the trucks carrying the cars are designed to run. 7

A further objeit is to provide an improved suspension railway construction for subw; s, which will hold the car against lateral swinging movement, and which will be simple in constru tion, comparatively cheap to install, and which will be strong and durablev in use.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinater described and pointed out in the claims.

In the accompanying drawings:

Figure 1 1s a view in side elevation illustrating my improvements.

Fig. 2 is a view in transverse section.

Fig. 3 is a view similar to Fig. 2 illustrating a modification, and

Fig. 4 is an enlarged view in transverse section of the girder and truck construction shown in Fig. 3.

l represents the transverse I-beams embedded in the cement 2 forming the roof of the ordinary subway, the walls of which are indicated by the reference numeral 3.

4, 4, represent parallel longitudinal girders which are secured by plates 5 to the I-beams 1, said plates 5 strengthened at their edges by angles 6 and forming a part of the longitudinal girders 4. These girders 4 are composed of upper and lower chords 7 and 8, connected by diagonal bracing 9, and by vertical struts 10, as well as by the plates 5 above referred to.

The chords 7 and 8, and vertical struts 10 are each formed by two angle irons secured together and from the vertical struts 1O cantalivers 11 are projected. These cantalivers 11 project in opposite directions, and

The truck 15 isprovided with four or more wheels 14 so that it is supported against possibility of lateral swinging movement, and the car being supported on such a truck, is held against lateral swinging movement, and maintains its proper relation with the walls of the subway.

v In Figs. 3 and 4, I illustrate a modification in which the cantalivers 18, corresponding to the cantalivers 11 ot' the preferred form, project outwardly from the longitudinal girders 19 corresponding to the girders 4 of the preferred form.

In this modified construction, the girders 19 can he connect-ed by crossed braces 20, so that a boxed girder construction or braced girder constru tion is had. With this modification, the truck 21 has its side frames 22 suspended upon wheels 23, and the latter run on rails 24 supported on I-beams 25 at the outer ends of the cantalivers 18.

\Vith this form of truck 21, a bracket 26 suspended from the truck, supports the car 27.

With both forms of my improved subway construction above described, I provide two longitudinal girders supporting cantalivers projecting in opposite directions either toward each other or away from each other, and support at the ends of the cantalivers, parallel rails upon which the wheels of the truck are designed to run.

In both forms of my invention, the trucks prevent swinging movement of the car, and this is an extremely important item particularly in subways where every inch of space economizedjn the construction is of vital consequence.

In F 2, my improvements are illustratedin a subway divided by uprights 28, so that two cars can be accommodated side by side in the subway, while in Fig. 8 I show the modification in connection with a single passageway, and in both cases, the girder construction and supporting means are identical, except that in the form shown in Figs. 1 and 2, the girders are farther apart than in the construction shown in Figs. 3 and 4, and in the latter case, the girders are-strengthened by crossed bracing which is not possible in the preferred form.

Various sl 'ht changes might be made in the general form and arrangement of parts described without departing from my invention, and hence -I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The combination with a subway structurev of transverse beams embedded in the roof of the subway; plates secured to said beams and depending therefrom; parallel longitudinal girders secured to the plates, said plates constituting parts of said girders and extending in the direction of the length thereof; laterally projecting cantalivers secured to said girders: and rails supported by said cantalivers whereby a truck with a l car can be suspended from and .roll upon said rails; substantially as described.

2. The combination with a subway structure of transverse beams embedded in the roof of said subway structure; plates secured to said beams and depending therei'rom,'said girders including upright struts between which said plates are positioned, said plates constituting parts of Said girders and extending in the direction of the length thereof; laterally projecting cantalivers secured to said girders; and rails supported by said cantalivers and upon which a truck can be mounted and roll, said truck forming a suspension device for a car; substantially 2 described. 7

3. in a subway, the combination with transverse I-beams embedded in the roof structure thereof, plates secured to the I-beams and depending therefrom, parallel longitudinal girders secured to plates and supported thereby, said plates constituting parts of the girders, of cantalivers projecting laterally from the girdersrails supported by the free ends of the cantalivers, a truck having wheels at opposite sides mounted on the rails, a hanger depend ing from the truck and projecting between the i1 ils, and a car secured to said hanger, substantially as described.

4. In a subway, the combination with transverse I-beams embedded in the roof structure thereof, plates secured to the I-beams and depending therefrom, parallel longitudinal girders secured to the plates and supported thereby, said plates constituting parts of the'eirders, of cantalivers projecting laterally irom' the girders, the antalivers of one girder projecting toward the cantalivers of the other girder, I-beams secured to the free ends of the eantalivers, rails on the I-beams, a truck having Wheels at opposite sides supported on the rails, a hanger on the truck extending downwardly between the rails. and a car supported by the hanger, substantially as described. 7

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.-

.JGSIAH H. SMITH.

Witnesses:

CHAS. E. Porrs, ANNA RsNroN. 

